I was well intentioned, but tired today, since I started out the day by going skating with my father. Or rather, he was on a bicycle, I was on skates. The surface was perfect for it, happily. But having exerted myself, and then filled myself up at DMAC with lunch, with my parents, I was full and tired and came home and napped. I did do some more reading of the old textbooks, which is useful, but nothing more than that. I must do better tomorrow.